Rubisco – enzim koji griješi

undergraduate thesis

• Title (english): Rubisco – enzyme which makes mistakes
• Author: Petar Mohorović
• Mentor: Željka Vidaković Cifrek (mentor)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2014, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Ribuloza-1,5-bisfosfat karboksilaza/oksigenaza, također poznat pod nazivom Rubisco, je enzim uključen u prvi korak fiksacije ugljika, u procesu kojim se atmosferski ugljikov dioksid u biljkama pretvara u energetski bogate molekule poput škroba i saharoze. Zbog svoje bifunkcionalne prirode, Rubisco, osim s CO2, stupa u reakciju i s molekularnim kisikom što indirektno uzrokuje gubitak energije, a i ugljika za biljke. Zbog te činjenice, smatra se da je Rubisco enzim koji griješi. U ovom radu prikazuje se priroda Rubisca, objašnjavaju se uzroci njegovih grešaka i koje je njihovo značenje za biljke. Također, iznose se rezultati istraživanja kojima se potvrđuje hipoteza da se Rubisco tokom godina usavršavao i prilagođavao uvjetima. Zajedno s tim i ostalim saznanjima o drugim ulogama Rubisca poput indirektnog održavanja globalne temperature, može se zaključiti da je Rubisco upravo onakav kakav treba biti.

Abstract (english)

Ribulose-1,5-bisphosphate carboxylase/oxygenase, also known as Rubisco, is an enzyme which is involved in the first step of carbon fixation, process by which atmospheric carbon dioxide is converted by plants into energy-rich molecules such as starch and sucrose. Because of its bifunctional nature, Rubisco reacts, not only with CO2, but also with molecular oxygen, O2, which indirectly causes loss of energy and carbon for plants. Because of these facts, Rubisco is considered an enzyme which makes mistakes. In this paper, nature of Rubisco is shown, causes of its mistakes are explained as well as their meaning for the plants. Also, the results of a research are shown which confirm the hypothesis that Rubisco evolved with time and got adapted to present environmental conditions. Along with this and insights in other roles of Rubisco such as maintaining global temperature, a conclusion can be made – Rubisco is exactly as it should be.

• Keywords: Rubisco
• Keywords (english): Rubisco
• Language: croatian
• URN:NBN: urn:nbn:hr:217:119969
• Study programme: Title: Molecular Biology; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) molekularne biologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) molekularne biologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2018-04-26 10:18:21